Evaluating leaf rust reactions of pure bread wheat landrace lines using non-parametric statistics


HOCAOĞLU O. , Akan K., AKÇURA M.

PHYTOPARASITICA, cilt.48, ss.261-271, 2020 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 48 Konu: 2
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1007/s12600-019-00782-7
  • Dergi Adı: PHYTOPARASITICA
  • Sayfa Sayıları: ss.261-271

Özet

This research aims to assess genotype x environment interactions (G x E) of the leaf rust (Puccinia triticina) reactions of 29 Turkish landrace-derived pure lines over seven environments. Field experiments were conducted in canakkale, Edirne and Samsun (Turkey) in three consecutive growing seasons from 2011-2012 to 2013-2014 under natural conditions. Leaf rust reactions of genotypes were recorded in accordance with the Modified Cobb scale. Genotype stabilities assessed by non-parametric stability statistics. Furthermore, a Principal Component Analysis (PCA) biplot of non- parametric stability statistics were used to compare their capability for capturing both stability and leaf rust reactions of genotypes in the given dataset. PCA Biplot results showed that non-parametric parameters of Thennarasu and Percentage Availability (PA) showed a positive association with mean disease severity while Rank Means (RM) were negatively associated. Non-parametric stability analyses revealed that Genotypes 29, 25 and 15 were the most stable pure lines when only 25 and 15 could be considered as resistant-stable. In order to determine both stability and leaf rust resistance in bread wheat, PA and RM are recommended.